Hand control for engine starting mechanism



July 14,1936. l. M.,CRAFTS ET AL 2,047,578

HAND CONTROL FOR ENGINE STARTING MECHANISM Filed April 5, 1955 2 Sheets-Sheet l I iv y 1936- I. M. CRAFTS ET AL 5 HAND CONTROL FOR ENGINE STARTING MECHANISM Filed April 5 1955 2 Sheets-Sheet 2 9 E/VTO/FS. gQJ L4,

7" IPA/E) Patented July 14, 1936 UNITED STATES PATENT OFFIE HAND CONTROL FOE ENGINE STARTING MECHANISM Application April 5, 1935, Serial No. 14,844

17 Claims.

' Our invention relates to mechanism for controlling the starting, stopping and running operations of engines, motors, or other prime movers, and an object of our invention, among others, is to provide an apparatus of this type which is simple in construction and particularly eflicient in operation.

One form of a mechanism embodying our invention and in the construction and use of which the objects herein set out, as well as others, may be attained is illustrated in the accompanying drawings in which Figure 1 is a view in front elevation of our improved mechanism.

Figure 2 is a side view of the same.

Figure 3 is a top view.

Figure 4 is a view on a. plane denoted by the dotted line 44 of Fig. 1.

Figure 5 is a view in cross section on a plane denoted by the dotted line 55 of Fig. 1.

Figure 6 is a view in cross section on a plane denoted by the dotted line B6 of Fig. 4.

Figure 7 is a view in cross section on a plane denoted by the dotted line 'l'! of Fig. 4.

Figure 8 is an isometric view of the coupler.

Figure 9 is a diagrammatic view illustrating the position of the parts of the starting mechanism in readiness for a starting operation.

Figure 10 is a similar view but illustrating the position of the parts after the throttle has been partially opened in a starting operation.

Figure 11 is another similar view illustrating the position of the parts after the motor has reached its full speed.

Figure 12 is still another similar view but illustrating the position of the parts when the hand control lever has been moved to stopping position but before the motor has lessened its speed.

In the accompanying drawings the numeral l2 denotes the base of a frame for supporting our improved mechanism, said frame also including a standard l3 at one end and a supporting bracket I4 at the opposite end, in which standard and bracket bearings are formed for a control shaft 15 which is longitudinally shiftable in said bearings for a purpose to be hereinafter described, said shaft also having a rocking movement in said bearings.

A hand control lever l6 comprises a hub I! loosely mounted for independent rocking movement on the shaft 15. This lever I6 is provided with a locking pin l8 which is operated by means of a grip lever l9 pivotally mounted on the hand control lever to engage said pin with and disengage it from notches in the edge of the bracket [4 to temporarily hold said lever against movement in a manner common to mechanism of this type and as will be readily understood without a more detailed description thereof.

A coupler 20 is secured to the shaft 15 for shifting movement thereby, said coupler having looking lugs 2| to engage with similar locking lugs projecting from the side of the hub ll for the purpose of locking the coupler in engagement with the hand control lever Hi. This coupler is preferably of angular shape in cross section (as herein shown it is square) for engagement in a hole of similar shape in the hub of a governor connector 39 to be shortly described.

A throttle connector 24 is mounted on the cou- 15 pler 20, said connector having a hole of substantially the same shape as that of the coupler so that the coupler may be shifted axially within the connector but the two are compelled to rotate together. This connector has connector arms 25 projecting therefrom, a connector block 26 being pivotally mounted between said arms, and a throttle connecting rod 21 is mounted for sliding movement in said block.

A throttle connection 28 is secured to the end of the rod 21, said connection including an extension which is adapted to be located in the path of movement of an actuating lip 29 projecting from the side of the lever 56, and as shown in Fig. 3 of the drawings.

The governor connector 36 hereinbefore mentioned comprises a hub mounted on the shaft l5 for independent rocking movement thereon said hub having a hole in its side which is fitted to receive the end of the coupler 20 for the purpose of coupling the connectors 24 and 30 together. Governor connector arms 3| project from the hub 30 of the connector, and a block 32 is pivotally mounted between the arms to receive the end of a governor connecting rod 33 which is secured in said block, said rod extending to governor mechanism and being connected therewith so that the control elements of the governor will operate to rock the governor connector 30.

A spool 34 at the end of the control shaft I5 is engaged by a forked arm 35 of a locking lever 38 pivotally mounted on a hood 31 secured to the side of the bracket 14. A locking handle 38 on said lever is employed for operating the lever and hence the shaft l5 for operation of the coupler 20 for locking the throttle and governor connectors together or for unlocking them, and also for locking the hub I! of the hand control lever to the hub of the throttle connector 24 and for unlocking said parts. This provides a simple means for readily and safely disconnecting the governor from the throttle valve or for connecting said parts.

A spring 22 is supported on the throttle connecting rod 21, said spring being under tension with one end in contact with the connector block 26 and its force being opposed by the rod 21, as herein shown this being effected by means of a tensioning block 23 secured to said rod. The rod 21 in its throttle opening movement will have a definite stop which may be appurtenant to the throttle but which for the purpose of illustration is shown in the drawings as a post 39 secured to and rising from the base 12.

In the operation of the mechanism, let it be assumed that the engine is not running and that the governor is equipped with an automatic shut down device of such a nature that the governor functions to hold the throttle in a closed position until such time as the engine reaches a predetermined low speed. Let it be further assumed that the governor functions to hold the throttle in a wide open position at any speed between the predetermined low speed and the normal rated load speed of the engine, these being functions found in governors in common use at the present time. Under these conditions the hand control lever [B will be in the position shown in Fig. 9, the throttle being closed and the handle 38 having been moved to lock the throttle connector and the hub of the lever l6 together. To start the engine the hand control lever l6 now being moved to the right and toward the position shown in Fig. 10, the connector being engaged with the hub I1, the rod 21 will be operated to open the throttle. As the engine starts and the speed increases the operation of the governor acting through the governor rod 33 will move the governor connector 30 and the arms 3| to the right and toward the position shown in Fig. 11. Movement of the hand control lever I6 toward the right will cause increase of speed. When the speed reaches a predetermined low point the governor will automatically move the arms 3| to wide open position where they will remain until the rated load speed is attained. When the hand control lever I6 is moved sufficiently toward the right and the rated load speed is thereby exceeded the governor will move the arms 3| toward the left to a point where the hubs 30 and 24 may be connected by means of the lever 38 actuating the coupler 20. Said lever now being operated to this end, said hubs will be connected and at the same time said coupler will be disengaged from the hub I1 of the hand control lever l6, said disengagement, however, not taking effect until the coupler 20 has entered the hole in the side of the governor connector 30.

The coupler 20 now connecting the throttle with the governor the latter exercises its function to control the speed of the engine in a manner that will be readily understood. When the hand control lever I6 is operated to stop the motor it will be manually moved to the position shown in Fig. 12, the lip 29 on said lever contacting the throttle connection 28 and moving it to the position shown in Fig. 12 to close the throttle, such movement being permitted by further compression of the spring 22. The throttle connector and governor connector arms 25 and 3| will remain in the positions shown in Fig. 12, being prevented from movement by the governor, until the speed of the engine lessens to the predetermined low speed when the automatic shut down device on the governor will function, moving the arms 25 and 3| tothe position shown in Fig. 9, the handle 38, however, being in the position shown in Fig. 12 until it is manually operated for starting purposes as hereinbefore described.

We claim:

1. A starting and stopping mechanism including a movably mounted throttle actuating member for varying the amount of fuel supply to an engine, throttle connecting means attached to said member, a governor actuated member with means for connection to a governor, a hand control member, and means for connecting said throttle actuating member with said governor actuated member or with said hand control member.

2. A starting and stopping mechanism including a movably mounted throttle actuating member for varying the amount of fuel supply to an engine, a throttle actuating means attached to said member, a governor actuated member with means for connection to a governor, a hand control member, and means for connecting said throttle actuating member with said governor actuated member or with said hand control member and for effecting one of said connections before release of the other connection.

3. A starting and stopping mechanism including a rocking throttle actuating member for varying the amount of fuel supply to an engine, throttle connecting means attached to said member, a rocking governor actuated member with means for connection to a governor, a rocking hand control member, and means for connecting said throttle actuating member with said governor actuated member or with said hand control member.

4. A starting and stopping mechanism including a movably mounted throttle actuating member for varying the amount of fuel supply to an engine, throttle connecting means attached to said member for movement thereby, means for permitting movement of said connecting means independently of said actuating member, a hand control member, means for locking said hand control member to said throttle actuating member and for unlocking it therefrom, means for connecting said hand control member with said throttle connecting means for said independent movement thereof, and means for connecting said throttle actuating member with a governor.

5. A starting and stopping mechanism including a movably mounted throttle actuating member for varying the amount of fuel supply to an engine, throttle connecting means attached to said member for movement thereby, means for effecting movement of said connecting means independently of said actuating member, a hand control member, means for locking said hand control member to said throttle actuating member and for unlocking it therefrom, means on said throttle connecting means located in the path of movement of said hand control member for said independent movement of said throttle connecting member, and means for connecting said throttle actuating member with a governor.

6. A starting and stopping mechanism including a movably mounted throttle actuating member for varying the amount of fuel supply to an engine, throttle connecting means yieldingly attached to said member for movement thereby, means for effecting movement of said connecting means independently of said actuating member for movement thereby, a hand control member, means for locking said hand control member to said throttle actuating member and for unlocking it therefrom, means for connecting said hand control member with said throttle connecting means for said independent movement thereof, and means for connecting said throttle actuating member with a governor.

7. A starting and stopping mechanism including a movably mounted throttle actuating member for varying the amount of fuel supply to an engine, a throttle actuating rod, a spring mounted on said rod, means for effecting thrust of said spring against said rod, said rod being loosely mounted in said throttle actuating member for movement independently thereof, a hand control member, means for locking said hand control member to said throttle actuating member and for unlocking it therefrom, means for connecting said hand control member with said rod for said independent movement thereof, and means for connecting said throttle actuating member with a governor.

8. A starting and stopping mechanism including a mo-vably mounted throttle actuating member for varying the amount of fuel supply to an engine, throttle connecting means attached to said member for movement thereby, means for effecting movement of said connecting means independently of said actuating member, a governor actuated member, means for connection of said governor actuated member to a governor, a hand control member, means for connecting said hand control member with said throttle actuating member or with said governor actuated member, and means for connecting said hand control member with said throttle connecting means and for said independent movement thereof.

9. A starting and stopping mechanism including a movably mounted governor actuated member operatively connected with a governor, a movably mounted throttle actuating member operatively connected with a throttle for varying the amount of fuel supply to an engine, means for locking said members together and for unlocking them, a hand control member, and means for locking said hand control member to said throttle actuating member and for unlocking it therefrom.

10. A starting and stopping mechanism including a movably mounted governor actuated member operatively connected with a governor, a movably mounted throttle actuating member connected with a throttle member to vary the amount of fuel supply to an engine, a throttle connecting member attached to said throttle actuating member for movement independently thereof, means for locking said throttle actuating member and said governor actuated members together and for unlocking them, a hand control member, means for locking said hand control member to said throttle actuating member and for unlocking it therefrom, and means for connecting said hand control member to said throttle connecting member to efiect said independent movement.

11. A starting and stopping mechanism including a rock shaft, a governor actuated member loosely mounted on said shaft, a throttle actuating member mounted on said shaft, means for connecting said governor actuated member with a governor, means for connecting said throttle actuating member with a throttle for varying the amount of fuel supply to an engine, a connector secured to said shaft to engage said throttle actuating and governor actuated members to lock them together and to unlock them, and means for operating said connector.

12. A starting and stopping mechanism including a rock shaft, a governor actuated member loosely mounted on said shaft, a throttle actuating member mounted on said shaft, means for connecting said governor actuated member with a governor, means for connecting said throttle actuating member with a throttle for varying the amount of fuel supply to an engine, means for operating said connector, a hand control member, and means for locking said hand control member to said throttle actuating member and for unlocking it therefrom.

13. A starting and stopping mechanism including a rock shaft, a governor actuated member loosely mounted on said shaft, a throttle actuating member mounted on said shaft, means for connecting said governor actuated member with a governor, means for connecting said throttle actuating member with a throttle, means for applying yielding force to said throttle actuating member to move it to throttle closing position, a connector secured to said shaft to engage said throttle actuating and governor actuated members to lock them together and to unlock them, means for operating said shaft to actuate said connector, a hand control member, and means actuated by said rock shaft to lock said hand control member to said throttle actuating member and for unlocking it therefrom.

14. A starting and stopping mechanism including a rock shaft, a governor actuated member loosely mounted on said shaft, a throttle actuating member mounted on said shaft, means for connecting said governor actuated member with a governor, means for connecting said throt- 3 tle actuating member with a throttle, said means including a throttle actuating rod, resilient means mounted on said rod and thrusting against said throttle actuating member in the direction of closing movement thereof, a connector secured to said shaft to engage said throttle actuating and governor actuated members to lock them together and to unlock them, a hand control member mounted on said shaft, means on said connector for locking said hand control member to said throttle actuating member, and means for operating said rock shaft to actuate said connector.

15. A starting and stopping mechanism including a rock shaft, a governor actuated member loosely mounted on said shaft, a throttle actuating member mounted on said shaft, means for connecting said governor actuated member with a governor, means including a throttle rod for connecting said throttle actuating member with a throttle, said rod being loosely connected with said throttle actuating member, a spring interposed between said rod and said throttle actuating member to permit yielding movement of said rod, a connector secured to said shaft, a hand 6 control member mounted on said shaft, means on said connector to lock said hand control member to said throttle actuating member and for unlocking it therefrom, means on said hand control member to engage said rod to effect inde- 6 pendent movement thereof, and means for actuating said shaft for operating said connector.

16. A starting and stopping mechanism including a movably mounted governor actuated member, means for connecting said member with a 7 governor, a movably mounted throttle actuating member, means for connecting said throttle actuating member to a throttle for varying the amount of full supply to an engine, means for 7 locking said governor actuated and throttle actuating members together when in certain relative positions only, a hand control member, and means for locking said hand control member with :said throttle actuating member and for unlocking it therefrom.

17. A starting and stopping mechanism including a longitudinally mounted rock shaft, a governor actuated member loosely mounted on said shaft and having a pocket of angular shape in cross section, means for connecting said member with a governor, a throttle actuating member mounted on said shaft and having a hole of angular shape in cross section, a connector secured to said shaft and of a shape corresponding to said pocket and to said hole, said connector being located in said hole, a hand control member mounted on said shaft, means on said connector for engagement with said hand control member to lock it to said throttle actuating member and for unlocking it therefrom, and means for imparting lengthwise movement to said shaft to actuate said connector.

IRVING M. CRAFTS. CHARLES B. TAYLOR. 

